Crystal Structure and Hirshfeld Surface Analysis of ()-6-(4-hy-droxy-3-meth-oxy-styr-yl)-4,5-di-hydro-pyridazin-3(2)-one
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In the title com-pound, CHNO, the dihydropyridazine ring (r.m.s. deviation = 0.166 Å) has a screw-boat conformation. The dihedral angle between its mean plane and the benzene ring is 0.77 (12)°. In the crystal, inter-molecular O-H⋯O hydrogen bonds generate (5) chains and N-H⋯O hydrogen bonds produce (8) motifs. These types of inter-actions lead to the formation of layers parallel to (12). The three-dimensional network is achieved by C-H⋯O inter-actions, including (8) motifs. Inter-molecular inter-actions were additionally investigated using Hirshfeld surface analysis and two-dimensional fingerprint plots. The most significant contributions to the crystal packing are by H⋯H (43.3%), H⋯C/C⋯H (19.3%), H⋯O/H⋯O (22.6%), C⋯N/N⋯C (3.0%) and H⋯N/N⋯H (5.8%) contacts. C-H⋯π inter-actions and aromatic π-π stacking inter-actions are not observed.
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